peb2256 Infineon Technologies Corporation, peb2256 Datasheet - Page 43
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peb2256
Manufacturer Part Number
peb2256
Description
E1/t1/j1 Framer And Line Interface Component For Long And Short Haul Applications
Manufacturer
Infineon Technologies Corporation
Datasheet
1.PEB2256.pdf
(490 pages)
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Table 4
Pin
No.
67
68
69
70
56
64
Data Sheet
Ball
No.
D6
A6
B5
D5
D8
C6
Pin Definitions - System Interface (cont’d)
Symbol
RPA
RPB
RPC
RPD
XDI
SCLKX
Output (O)
Supply (S)
O
I
Input (I)
I + PU
System Interface Transmit
Function
Frame Synchronous Pulse (RFSP)
PC(1:4).RPC(2:0) = 111
Active low framing pulse derived from the
received PCM route signal (line side, RCLK).
During loss of synchronization (bit
FRS0.LFA = 1), this pulse is suppressed (not
influenced during alarm simulation).
Pulse frequency: 8 kHz
Pulse width: 488 ns (E1) or 648 ns (T1/J1).
Transmit Data In
Transmit data received from the system
highway. Latching of data is done with rising or
falling transitions of SCLKX according to bit
SIC3.RESX.
The delay between the beginning of time slot 0
and the initial edge of SCLKX (after SYPX
goes active) is determined by the registers
XC(1:0).
In higher (more than 1.544/2.048 Mbit/s) data
rates sampling of data is defined by bits
SIC2.SICS(2:0).
System Clock Transmit
Working clock for the transmit system interface
with a frequency of 16.384/8.192/4.096/2.048
in E1 mode and 16.384/8.192/4.096/2.048
MHz (SIC2.SSC2 = 0) or 12.352/6.176/3.088/
1.544 MHz (SIC2.SSC2 = 1) in T1/J1 mode .
43
Pin Descriptions
FALC56 V1.2
PEB 2256
2002-08-27
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